Looking for a way to preserve your peach harvest? The best varieties for this are Glenglo, Ernie's Choice, Cresthaven, John Boy, Loring, Redhaven, and Sunhigh. Elberta is less acceptable. All are yellow free-stone peaches. Most apricot and nectarine varieties are suitable for canned and frozen products. This 3-page (PDF) publication gives an overview of the process.
Pennsylvania State University Extension